Plant guide
Tree-of-Heaven Removal and Regrowth
Tree-of-heaven mulched and cleared in sequence with a licensed applicator, then followed up through the growing season. Scoped on a private site walk.
Tree-of-heaven sprouts hard from stumps and roots when it is only cut, so removal is a sequence, not one pass. A licensed applicator treats the tree first. We then mulch the dead stems and cut the sprouts that follow on return visits until the root system runs out of energy.
How to recognize it
Tree-of-heaven (Ailanthus altissima) is a fast-growing deciduous tree that can reach about 80 feet tall. Young bark is smooth and brownish-green and turns light brown to gray with age. Its leaves are pinnately compound, one to four feet long, with 10 to 40 lance-shaped leaflets. Each leaflet has a smooth edge and one or two glandular teeth at the base.
Three checks help on a walk. Crushed leaves and broken twigs give off a strong, unpleasant odor. Twigs are stout with large heart-shaped or V-shaped leaf scars. Female trees carry twisted, winged seed clusters, often one to two inches long, that can hang on through winter. Staghorn sumac, black walnut and hickory are common look-alikes, but their leaflets have toothed edges and tree-of-heaven leaflets do not.
Why it matters locally
Penn State Extension describes tree-of-heaven as an invasive tree and noxious weed in Pennsylvania. Trees grow in dense clonal colonies, and a single female can produce a very large seed crop that travels on the wind. Sprouts as young as two years old can produce seed, so a few overlooked trees at a fence line or hedgerow can restock a whole field edge.
Penn State Extension also calls tree-of-heaven a preferred host plant for the spotted lanternfly. That is one reason Pennsylvania agencies and extension educators push for its control. On a farm or estate in Chester County, the practical effect is that fence rows, old lots and field corners with tree-of-heaven are worth dealing with on a schedule, not putting off.
How we remove it
Mulching by itself does not finish this plant. Penn State Extension states that cutting or mowing is ineffective because it triggers sprouting, and cut or injured trees can send up dozens of stump and root sprouts. Root suckers can appear up to 50 feet from the parent tree. We tell owners this before any machine starts.
The sequence we plan is treatment first, then machine work. Chemical control is done only by a licensed applicator, who sets the method for your site. Once the trees are treated, the Cat 285XE with its forestry drum mulcher grinds standing stems in place, the BRX418 brush cutter handles sprouts, fence lines and tight edges, and the rock grapple moves large stems that should not stay put. Where a tree is a safety concern and must come down, Penn State Extension advises treating first and waiting before cutting, so we coordinate that order with the applicator.
Timing by season
Penn State Extension places the effective window for systemic root treatment from July until the onset of fall color, when the tree is moving carbohydrates down to its roots. Treatment outside that window mostly injures top growth. Because of that, we usually line up the applicator in summer and schedule mulching for the dormant season, from late fall through winter, when stems are easy to see and the ground is firm.
Sprouts show up in the next growing season. Young sprouts are cut with the brush cutter before they get big, and the schedule for those visits is written into the plan after the site walk.
Regrowth and follow-up visits
Expect regrowth. Penn State Extension says persistence is key and that follow-up monitoring is essential, since the first treatment often only reduces the root system. In the plan, season 1 is treatment and mulching, season 2 is a follow-up pass on sprouts and any survivors, and season 3 is a lighter check. The number of visits is decided on the ground, not promised in advance.
New plants also come from seed already in the soil, so cleared ground is watched for seedlings. Our general method is on the invasive regrowth plan page.
What the owner can do
- Leave a standing tree standing until it has been treated. Cutting first sets off sprouting.
- Do not pull or dig mature trees. Root fragments can regenerate.
- Photograph the tree, a leaf and any seed clusters, and send them with the town and rough acreage.
- Mark the edges of each colony, since suckers can travel well away from the parent.
- Hand-pulling small seedlings works only when the soil is moist and the whole root comes out.
Questions about tree-of-heaven
Sources include Penn State Extension and the USDA Forest Service. Chemical control is done only by a licensed applicator, and Huntly confirms the rules that apply to each site before work.
Will cutting tree-of-heaven kill it?
No. Penn State Extension says cutting or mowing triggers sprouting, and a cut tree can send up many stump and root sprouts. Treatment by a licensed applicator comes first, and mulching and follow-up cutting come after.
Is tree-of-heaven connected to the spotted lanternfly?
Penn State Extension describes tree-of-heaven as a preferred host plant for the spotted lanternfly, which is one reason its control is encouraged in Pennsylvania.
When is the best time to treat tree-of-heaven?
Penn State Extension gives the root-treatment window as July until the onset of fall color. A licensed applicator sets the method and timing for your site, and we schedule mulching around it.
Does Huntly Land Co. spray the trees?
No. Chemical control on tree-of-heaven is done by a licensed applicator. We handle mulching, brush cutting and follow-up passes, and we coordinate the order of work with the applicator.
More about Tree-of-heaven
Regulatory notes are general guidance; Huntly confirms the rules that apply to each site before work.
How do I tell tree-of-heaven from sumac or walnut?
Penn State Extension says the leaves are long and compound with smooth leaflet edges and one or two glandular teeth at the base, while staghorn sumac, black walnut and hickory have serrated leaflets. Crushed leaves and broken twigs smell foul. Twigs have heart-shaped leaf scars and spongy brown pith.
Why does tree-of-heaven send up so many sprouts after I cut it?
Cutting wakes it up. Penn State says it produces many stump sprouts and root suckers, and a cut or injured tree may send up dozens. Suckers can emerge up to 50 feet from the parent. Cutting alone just makes more stems.
How much seed does a tree-of-heaven make?
A lot. Penn State says female trees can produce more than 300,000 seeds a year, and sprouts as young as two years old can produce seed. That's why leaving a mother tree standing undercuts the clearing. We tag seed trees on the site walk.
Is tree-of-heaven sap or pollen a problem for people?
Possibly. Penn State says it's a very high pollen producer and a moderate allergy source, and contact with leaves, bark or sap can cause skin irritation in some people, with rare reports of heart inflammation from sap entering broken skin. Our crews wear gloves and protective clothing.
Does tree-of-heaven change the price of clearing?
Yes. Large trees, dense sucker patches, steep ground and fence lines add time, and follow-up visits are part of the plan. Felling and haul-off for big trunks are separate lines, and any licensed-applicator work is quoted separately. Written price after a free site walk.
Does cost-share pay to remove tree-of-heaven?
Not usually, though shrub-sized sprouts can be brush. NRCS Pennsylvania's schedule lists brush management (practice 314) mechanical on large shrubs at a per-acre rate set each year, and eligibility is NRCS's call. Ask your local office first. Huntly quotes the work either way. Huntly confirms the rule that applies to each site before work.
Should I cut a big tree-of-heaven before treating it?
Penn State says if a tree must come down for safety, treat it with herbicide first, wait about 30 days for symptoms, then cut. A licensed applicator does the treatment as a separate visible line. We cut afterward and clear the debris. Plan the order on the site walk.
Call, or send the details.
(484) 486-7272hello@huntlyland.com. Send the town, rough acreage and two or three photographs. We reply with site-walk times, and a written plan follows the walk.
Office hours Monday to Saturday, 8 a.m. to 4 p.m. On call 24/7 for storm and emergency cleanup. If anyone is in danger, call 911 first.